As with capital goods (tangible items such as buildings, machinery, and equipment produced and used in the production of other goods and services), the consumption of a durable good is spread over its life span, which tends to create demand for a series of maintenance services.
The event which is referred to as The Phoenix Lights comprised of a series of incidents, involving a number of different craft and orbs which took place during the evening of March 13th 1997.
Roswell: Ron as well as one of the most talked about cases in New Mexico as onlookers described the crash of an unidentified flying object. The Phoenix lights: in 1997 thousands of people saw V-shaped patterns in the sky for space of around 300 miles from the Nevada line.